Wiktionary
hell-bent for leather
adv. (alternative form of hell-for-leather English)
Usage examples of "hell-bent for leather".
I could see a number of them were down upon the ground already, but as I approached riding hell-bent for leather, they turned from their activities and sought sanctuary in the air where I could not reach them.
Buenavista was a good one, and there were several others to which you could quickly transport a wounded cop if you were hitting the hammer and riding hell-bent for leather.